Stenzel, F., & Swan, J. G. (1959). Early days in the Northwest: Prints, paintings. Portland Art Museum.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रStenzel, Franz, और James G. Swan. Early Days in the Northwest: Prints, Paintings. [Portland: Portland Art Museum, 1959.
एमएलए (8वां संस्करण) प्रशस्ति पत्रStenzel, Franz, और James G. Swan. Early Days in the Northwest: Prints, Paintings. Portland Art Museum, 1959.
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